Home / 142,148.52-196,159.73-78,484.95

Finding the Fourth Proportional to 142,148.52, 196,159.73 and 78,484.95

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Solution

The fourth proportional to 142,148.52, 196,159.73 and 78,484.95 is: 108,306.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,148.52 : 196,159.73 = 78,484.95 : x
  2. Step 2: Convert to fraction form
    142,148.52/196,159.73 = 78,484.95/x
  3. Step 3: Cross multiply
    142,148.52x = 196,159.73 × 78,484.95
  4. Step 4: Simplify right side
    142,148.52x = 15,395,586,208.64
  5. Step 5: Solve for x
    x = 15,395,586,208.64/142,148.52
  6. Step 6: Final answer
    x = 108,306.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.